Income Tax Expense (Tables)

9 Months Ended

Sep. 30, 2014

Income Tax Expense [Abstract]

Income Tax Expense [Table Text Block]

	Quarter Ended						Nine Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
Millions
Current Tax Expense (Benefit)
Federal (a)(c)	—			—			—			—
State (b)(c)	$1.8			$(0.1)			$1.9			$(0.1)
Total Current Tax Expense (Benefit)	$1.8			$(0.1)			$1.9			$(0.1)
Deferred Tax Expense (Benefit)
Federal		$11.2			$7.3			$20.4			$15.5
State	0.7			1.7			5.4			5.5
Investment Tax Credit Amortization	(0.3		)	(0.2		)	(0.6		)	(0.6		)
Total Deferred Tax Expense	11.6			8.8			25.2			20.4
Total Income Tax Expense		$13.4			$8.7			$27.1			$20.3

(a) For the quarter and nine months ended September 30, 2014, the federal current tax expense of zero reflected the utilization of NOL carryforwards from prior periods. The federal NOLs remaining after utilization in 2014 will be carried forward to offset future taxable income.

(b) For the quarter and nine months ended September 30, 2014, the state current tax expense reflected initiatives implemented on the 2013 federal and state tax returns to utilize tax carryforwards that may have expired due to NOL carryforwards from prior periods. State NOL and alternative minimum tax carryforwards remaining after utilization in 2014 will be carried forward to offset future income.

(c) For the quarter and nine months ended September 30, 2013, the state current tax benefit was due to federal and state NOLs which resulted from the bonus depreciation provision of the American Taxpayer Relief Act of 2012.